Android - 使用ProviderTestCase2进行测试的代码示例

import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.test.ProviderTestCase2;

public class MyProviderTest extends ProviderTestCase2<MyContentProvider> {

    private ContentResolver contentResolver;

    public MyProviderTest() {
        super(MyContentProvider.class, "com.example.myprovider");
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        contentResolver = getMockContentResolver();
    }

    public void testInsert() {
        ContentValues values = new ContentValues();
        values.put("name", "John");
        values.put("age", 25);

        Uri uri = contentResolver.insert(MyContentProvider.CONTENT_URI, values);
        assertNotNull(uri);
    }

    public void testQuery() {
        Cursor cursor = contentResolver.query(MyContentProvider.CONTENT_URI, null, null, null, null);
        assertNotNull(cursor);
        assertTrue(cursor.moveToFirst());
        assertEquals("John", cursor.getString(cursor.getColumnIndex("name")));
        assertEquals(25, cursor.getInt(cursor.getColumnIndex("age")));
        cursor.close();
    }

    public void testUpdate() {
        ContentValues values = new ContentValues();
        values.put("age", 30);

        int rowsUpdated = contentResolver.update(MyContentProvider.CONTENT_URI, values, null, null);
        assertEquals(1, rowsUpdated);
    }

    public void testDelete() {
        int rowsDeleted = contentResolver.delete(MyContentProvider.CONTENT_URI, null, null);
        assertEquals(1, rowsDeleted);
    }
}